Remote control for phonographs



June 19, 1945. l H. G. JENSEN ETAI. 2,378,557

REMOTE CONTROL vFOR PHONOGRAPHS E Filed July 24, 1941 7 Sheets-Sheet 1 wf@ j F', 7

k f z 5 f g' /28 6 *2 3 Y ff /25' f mf' 26 d [W uf June 19, 1945.r v H. 'G'. JENSEN ET'AI. 2,378,557

REMOTE OOOOOOOOOOOOOOOOOOOO S Filed July 24, 1941 '7 Sheets-Sheet 2 mgrwf@ Ol'-@J-! June 19, 1945. H. G. JENSEN Er AL 2,378,557

REMOTE CONTROL FOR PHONOGRAPHS June 19, 1945. H. G. JENSEN ETAI.

REMOTE CONTROL FOR PHOOGRAPHS '7 Sheets-Sheet 4 Filed July 24, 1941 @7% Vf @f June 19, 1945. l-LG. JENSEN ErAL REMOTE CONTROL FOR PHONOGRAPHS '7 Sheets-Sh'et 5 Filed July v24, 1941 llh Y Liza lJune 19, 1945.

H. G. JENSEN 'ET A1.

REMOTE CONTROL FOR HONOGRAPHS Filed July 24, 1941 7 Sheets-Sheet 6 4. llllllllllll Illllll. ".7

Jmm'lg,v 1945. H. G. JENSEN ETAL 2,378,557

REMOTE CONTROL FOR PHONOGRAPHS y Filed July 24, 1941 '7 Sheets-Sheet 7 E QWE adapted for mounting upon a bar. It comprises a housing having a major vertical portion which is adapted to be located in vertical position at the inner or rear edge of the bar. This housing portion 20 carries on its forward-side a pair of adjustable brackets 2| whereby the box as a whole may be readily secured to the bar.

From the upper end of the housing portion 20 extends downwardly and forwardly in oblique relation a second maior housing portion 22. The housing portion 22 is provided with a removable front or upper panel 23 which is provided with a window 24 and with a series of Vopenings 25 through which project buttons 26 corresponding to individual recordings to be selected and played.

The front or upper panel 23 `is normally held in position by means of a latch assembly 21 which is provided with latching members 28 and 29 which are adapted to cooperate with latching elements 30 and 3|, respectively, on the panel 23. The latching assembly com prises a handle portion which extends rearwardly into a position near the removable rear panel V32 vof the major housing portion 2U. Itwill be readily understood that if the removable panel 32 is removed and the handle portion 33 is moved rearwardly the front panel 23 can be lifted off.

The latching assembly'is slidably mounted upon a chassis 34 which occupies the second principal housing portion 22. This chassis comprises two longitudinal switch assemblies`35 and 36 and twov transverse members 31 and38. The switch assemblies 35 and 36 comprise slidably mounted members 39 in number corresponding to the number of recordings to be controlled and each slidable member 39 carries one of the buttons 26. When any one of the buttons 26 is moved inwardly, certain switching operations are effected which will hereinafter be fully described.

Each switch assembly 35 and 36is provided with a locking bar 40 which is adapted to lock any and all of the switching members in normal or actuated position. The latching bars 49 are normally in non-latching position, being held there against the tension of springs 4| by means of arms 42 pivotally mounted on the chassis 34.

`The inner ends of the arms 42 are pivotally connected to a bar assembly 42', the upper end of which is forked, the fork arms being located on either side of a shaft 44. The bar assembly 42 is biased upwardly by a spring 44 connected to the bar assembly and to the chassis. The shaft 44 is driven by the motor` 45, the motor being supported on the chassis 34. The barassembly- 42' carries an abutment 43 whichls adapted to cooperate with a cam l43 rigidly carried by the shaft 44.

and the bars 40 are immediately moved to locking position. They remain in this position until the shaft 44has made one revolution whereupon the buttons 26 are again unlocked for operation. The slidably mounted members 39 are forced foutwardly by means of springs 46 sothat immediately the locking bars 40 move to unlocking through a gear reduction 46 so that the shaft 44 is driven at a relatively slow speed. The shaft 44 carries a bevel gear 41 which meshes with abcvel lgear 48 of a shaft 49 which is rotatably mounted on the chassis 34. The chassis 34rigid1y carries It will readily be understood that when the motor 45 starts to operate, the shaft 44 is rotated a disc 59, the shaft 49 extending through the center of the disc.

The shaft 49 carries two arms 5| and 52 which l shaft 49 is given one complete revolution, the

arm 52 comes into engagement with each of the twenty-live contacts 54.

The shaft 49 also carries two arms 55 and 56. The arm 55 is adapted to engage a segmental contact 51 and the arm 56 is adapted to engage six contacts 58 arranged in an arc on the disc 56. It will readily be understood that when the shaft 49 makes one complete revolution, the arm 55 moves over the contact 51 and while it is moving over this contact, the arm 56 moves over the six contacts 58. The arms 55 and 56are conductively connected together and are insulated from all other elements on the shaft 49.

The shaft 44 carries a cam 59 which is adapted, during each rotation of the shaft, to open a switch 60 momentarily. The cam 59 is arranged to open the switch 6B after the shaft 44 has rotated through one-third of a revolution. The shaft 44 also carries a detent 6| which is adapted to move back a ratchet wheel 62 through one tooth during each rotation of the shaft 44. The ratchet wheel 62 is biased in the opposite direction by a spring 63. It is normally held against rotation in said opposite direction by means of an escapement member 64 which is pivoted at 65. This escapement member is adapted to be actuated by means of an electromagnet 66 which is arranged so as to cooperate withl an armature 61 integral with the escapement member 64. K

Consequently, it will be understood that each time that the electromagnet 66 is energized, the ratchet wheel 62 makes one step in the counterclockwise direction, as viewed from the front of the device, and that each time the shaft 44 makes one revolution, the ratchet wheel makes one step in the clockwise direction, as viewed from the front of the device.

The ratchet wheel 62 carries a pin 68 which is adapted to control a switch 69. When the ratchet wheel 62 is in normal position, the pin 68 is in engagement with the member-associated with the switch 69, holding this switch open. When, however, the electromagnet 66 is energized one or more times, the pin 68 is drawn from the switch 69 and this switch remains closed until the ratchet wheel 62 is returned to normal position by a successive number of rotations of the shaft 44.

Upon the lower end of the bar assembly 42' is rearwardly extending pin 16. In normal condition of the device, the pin 19 is in engagement with pieces of insulation 1| and 12 on the poles 'of two switches 13 and 14 holding these switches Jects on either 'sine csf a mentes-which iS-pivot- 'any mounted oabmcketss car'idonthe chasis' The 'detent85'is'biased forwardly-towardsthe the n been 'r' a 'complete revolutionf the' shafts u fianet the'fnyfvs entras-the @Bernay-be.

'bbeatingn i' Whefhnwevertli'emotoris'operats ng', tneibarsfm movcownwardiy out @orientant jwitn the ccnfcaetsfstsofas'ltoconditiopvtheesciu Ctcl' for* rationas willffhereinafter be" described. "@onsmeting1the*contacts154i as 'associes .uniche ire'ctinnfit ist'o be notedhattthefirst tnescontacts are -connecteutogetherandmo k.a conductor 95. The sixth contact which issiese -whchl'isjdesignated fthe No. #f2 switch. 96, and

kmilmk'ser:)switch 196 vfNo.- .19,t-iorsexamp1e, andztalso .to thearlier switch 96;.for example.switch96., No. 18's .'Iheg-lastecontaict i 5.l;.1which. is Lcontact 5.4 fNo. 320.,.: merely., Aconnected ,to one side (of switch Consequently, the switches 96 fromNofl tolo. 3119, sarei-connected intseriesfgand 4it will readily; be thatftanyeof these switches'-95..-ior-example 955Mo.- is opened, the first -yefsmtts wrespsndins additional numbers@ GQ11- .tss !.sets@watchin-seriesfentoth.sen-

thjhjas .thus been opened, it 'will remain The switches -91fare' arranged in parallel, al1 of them beingjconnec'ted"tor-the conductors j98 and 99. jThu's, :in v 'a;.'ld`ition to connecting acertan correspondingfnumlo'er o'f `contacts 54 Ito 'the conduc- T24 in thefront pane`123.

"is connected to al* conductor 1 10 I The 'rst tlireeffo'ffthe; contacts59 are connected tocn'e side vofthe `switch*1'9"and one side ef 'the switch 82. The last`-'three vcontacts 58 are conlnectedfto `one lside'fofjthe switch 93. The other sides of the `switches"19,382 and83`are`connected 'to a conductor |112. f The segmental contact'151is connected:toffe:| conductor |03 which is a1so"con v"n'ect'et1-to one'fsidefjof"thesswitch 13, tooneside ofithel'switch 159,l tojone side of lthe 'switch\1*8, and

side of the'prela'y 15 and toa'conducto'r |05. vThe 'one sidev of the motor 45, to one'side of the motor .switch 69, to theothenside of the switch '18, and 1 tojthe othersideof-'the switch '81. 'The other side "of the motor swi tclf1 t'9 ijs'connected tothe conf ductor 99.

One side of is'connected toa vconduc- .lto'r |01, the -Qthe1j`" sidebeing .connected to Aa con- .ductorlll. A conductor |09 vis connected to one iside ofthe `e 1ectrom'agnet '66, to the' other side .of lthe 'motor '45., Ytol the other side 'of the Vrelay 15,

-andtothe othergsfi e of 'the relay 16. `'.ll'iejothe'r side of'theelectromagnet 6Bfis 'connected to the conductor [02. "Aonductor 1.110 visiconnectecl to v the nhassisjfl .to serve as aground. 'Upon lthe jalityg'flamps'A l l, 'one .side of 'each of which is grounded, the l'other side being connected to a. conf 'Ihe l ps1 I lgservetoxilluminate aflouvfered vprogramindicator H3 adapted to hemounte'd on the front of the chassis 34.,so as to providesup- .port/ for tags or lab'elfs indicating the. names of 'the ,selectio'n'sj "Ifhe 4names "of these selections appearjiOI-lposite the buttonsl which thus,I vby 'mere propin'quty;indic'atethe .title of the recording correspondingl to the' rnearest fbutton. The titlecards 'crilabelsin'ay also -'near numbers corresponding ;to'thenumhers on the buttons. .The titles' canjof jcoursej "e `seen through rthe window v'T11'efCQilfduct'ors11111; 103,112, 9 5, |06, `101,105, fugg-410,2; 1.08.., 19.9 and il l0 'are O'lmfd .ilw f cablel ,and are connected fo the .correspvnine prongs', 'of ajp11`1g,|..l;4 which is jadapfted ptohe he main body portion 20 which alsoincludes the electrical elements shown on, the left-hand side of the wiring diagram (Fig. 19). .i ,y ,l

The socket block ||5 comprises corresponding sockets which bear the samenumbers as the aforesaid conductors with the addition of primes, and these sockets are connected to `conductors which are also indicated by the same numbers with the addition of primes. That is, the con-- ductor |03, for example, is connected to aprong designated |03', and-this prong engages a socket |03' which is connected to a conductor indicated |03', and so forth.

At the top of the vertical housing portion 20 is a coin receptacle ||6 which is adapted to receive coins of a plurality of denominations, for example nickels, dimes vand quarters. Behind this receptacle, and separated therefrom by a red window ||1, is an incandescent lamp ||8 which, together with a series resistance ||8, is shunted across the terminals of the motor 45. Consequently this lamp gives out a red light when the motor is in operation and serves as a signal to the patron that the machine should not be distributed until the motor stops.

The terminals of the lamp ||8`are'connected by leads to a suitable terminal block on the chassis 34. The coin receptacle ||6 communicates with a. coin chute which leads the inserted coin to the inlet opening of a slug-rejecting and A coin-separating unit |2|. Rejected coins are directed to an exterior pocket |22. Accepted coins drop from the coin-separating unit |2| through their respective channels into a coin box |23.

' At the outlet of each coin channel is a pivoted lever |24 which cooperates with a corresponding switch |25, |26, |21. If a quarter is,V accepted, switch |25 is closed momentarily, if a dime is accepted, switch |26 is closed momentarily, and if a nickel is accepted, switch r|21 is closed momentarily.

A button |28 located behind the coin receptacle ||6 and lamp ||8 is connected to scavenging equipment |28 on the slug rejector.

The vertical housing portion 20 encloses a power transformer |30, a tube |3|, which may suitably be a 10L'1GT tube, being a rectifier and power ampliier in one unit, an oscillating coil |32, a signal pickup coil |33, condensers |34 and |35, associated elements and a main switch |36, which may be actuated from the exterior of the housing with the aid of a suitable key.

Poweris supplied to the device by means of power lines |31 and |38 which are connected to a suitable plug |39 for insertion in any convenient outlet. The primary of the transformer 30 is connected to the conductors |31 and |38. The conductor |38 is connected to one side of the condenser |35, the other side being connected to the conductor |01'. V

The conductor |31 is also connected to one side of the condenser |34. The other side of this condenser is connected to one end of the pickup coil |33. The other side of the pickup coil |33 is connected to conductor |08.

One end of the secondary of thetransformer |30 is grounded by the main switch |36 when it is closed. The grounded end of the transformer is connected to conductor I 08'. The main switch also, when closed, grounds one side of the iilaments of the tube |3|. A 5.5-volt tap on the secondary of the transformer |30 is connected to conductor |2' for the supply of current to the lamps A 25-volt tap on the secondary of the transformer |30 is connected to V diode elements of the tube |3|.

.conductor |03.

The main switch |36, .when closed, connects conductor |03 to conductor 98.- l

The conductor |03' is connected to one side of each of the switches |25, |26 and |21. The other side of switch |25 is connected to conductor |06. The other side of switch |26 is connected to conductor |05. The other side of -switch |21 is connected to conductor |02. A

(i5-volt tap on the secondary of the transformer |30 is connected by conductor |40 to the ungrounded sides of the laments of the tube |3|.

The 1Z0-volt terminal of the secondary of the transformer |30 is connected to the plate of the The cathode of these diode elements is connected to conductor |0| and is also connected through a. high resistance lter circuit |4| to ground. The filter circuit |4| may include a 39,000-ohm resistor and a 12-microfarad condenser in parallel therewith.

The conductor is connected through a choke coil |42 to a condenser |43 to the plate of the pentode section of the tube |3| and to the screen grid of this section. Conductor |04' is connected to the cathode of the pentode section of the tube |3| and to an intermediate tap on the oscillator coil |32.

The other side of the condenser |43 is connected to the grounded end of the oscillator coil |32 and to one side of a tuning condenser |44 arranged in circuit 'with the oscillator coil |32 to provide a tank circuit tuned to a definite radio frequency, for exampley a radio frequency of 200 kilocycles.

A tap on the oscillator coil more remote from the grounded end thereofV than the connection of the conductor |04 is connected through a grid leak |45 to thevcontrol grid of the pentode section of the tube |3|.

It will be understood that the diode section of the tube |3| provides direct current plate voltage for the operation of the pentode section of this tube and that the pentode section of this tube, together with the tank circuit including the oscillating coil |32 and the condenser |44, functions as an voscillator adapted, when operating, to supply energy of definite frequency, for example 200 kilocycles, to the winding |33 from whence this radio frequency energy is supplied to the lines |31 and |38 and thence to the power lines. It will of course be understood that instead of supplying this energy to the power lines, the same may be supplied to any kind of broadcasting antenna.

The operation is as follows: The switch |36 is closed, thus grounding the secondary of the transformer |30, grounding one side of the laments of the tube |3| and connecting conductor |03 to conductor 98. It is to be noted that if the switch |36 is open, the patron does not lose his credit'since energypis supplied to the circuits which include switches |25, |26 and |21, and the relays 16, 15 and 66, respectively, even when the switch |36 is open. However, the patron is unable to select because the circuit through the switches 91 is disconnected by the switch |36.

lWhen, however, the switch |36 is closed; the customers credit is then on the ratchet wheel 62 and he may make selections in number corresponding to the credit.

In normal operation, howevenvthe switch |36 will be closed, tube |3| will be warmed up. The

oscillator circuit which includes the tube |3| and the oscillator coil |32 isnot, however, vin oscillaticn,because the plate circuit of thediode elen 2,378,557 mentwotthe tube 13| is-open, thear-m52': being .shaft-49? completedf; result 0il this.. qutfotiengagementwith anytfoithefcontacts-51k;A Gcnsequent1y direct vcurrent platelfvoltage-f is.;r1oti sunpliedto theula-,tel oi?Y the: pentodefelements.: ci.

Y av'nickelfisfnow 4inserted in the coin recep taeter 6,;1 thIenf' an; circuit is momentarilyestah lishedvwhich includesk conductor |03?, switch; |271;k

conductorinf', conductor |02., electromagnetor' tn'i'the: secondary?ofthe-transformer |30. *Conse .Vquentlys the=ratchet1wheel 6.2 moves oneftoothr:

ndthefs'witch 69 closes, leaving theapparatus ifirlfcpnditiorr for the selection of one selection:

. Szrmzrose"nowthatthepatronl desires thelrendi; tion :of selection No. '1,1 he' actuates'v push. :button 2li Nof'l, which closes the, corresponding-switch? lthe switch 91 vcompletes thel motor.D eircui-tjv4 use follows: Conductor I 09", conductor |09;- motor-y liswitchr.; conductor 99, closed' 'switch9'l No. 7j conductor 98, conductor 98 and conductor" |1033,l hckyftthe'secondary of the' transformer,vl

c .Consequently the 'motor starts to operateon the yactuation'ofbuttori 26= No. 1.,l A's'hasl heretofore `M51 conductores, conductor 95', choke; eoiiju'zj] tothe plate ofthe -pentode` elements ofA the" tube Ill." Consequently; these pentode ,elementsi'mrer ce'ivd during this;` single revolution* iofjl the'lshaft Iti's tio be noted thatthe coil dhseifs il 34' and: |35 are, in seriesv circuit withnthe, normally fopen switch` 14. This switch,` however',

i's"c1osed"imrnedi`ately the motor starts'to operate; The purpose of this switch is to preventoverload'- ix'igofthelinein case a large number ofselecting. de ces' areassociatedl therewith., After theone revolutionofthe shaftl 49. is completed, theswitch Mfi's'againopf'me'id,l L p. o hasbeen previously noted,l the j switch 091s v opened." dining thereyolution of`r the. shaft.

4.'Ifhye, motor; continues toV operate, until4 the,` shaft, 49 has. made. a. complete revolutiom the.

motor4 circuit; .being completed as. follows: con".VV ductor'llBf, conductor; |09', motor |15,y switchl'lw (whichil switch`l closes` immediately the motorv starts-)2, conductor; |03- and. conductor |03', It` isv tfQ-Jbenoted, that,.this1carryov er circuit inde. pendentof` theA switch |36` sozfthatl free playscanf not:- be obtained by merely actuatingthisl switch` 'The motor will continue to, operate. untilV ,the`

' smit-49" has made, a complete-v revolutionl notwithstanding. thef-fact. that the switch ISE-:may ham'eflie`ertl operied'-V at anV intermediate poi-nt, in l that Acomplete revolution; As has' been;previous.` ly describe@ .the-'-switchx13, like the switch'l;

. n becomes-@open immediately the revolutionof-,the'

rof

actuatiomisfthat '.al denitefnumber of` ..im-pulses,j thegvnumber depending upon the-selector-button actuatedgofdeniteradio :Ereamenity.;y are fed into thelines |3'l'fal11c1rl38.` v

The.: operation resulting lfrom the' l insertion' of afdimefwill: nowffbedescrbed., A dimer-momen'- tarilyf.,,closes-switchY |'2f61and completes `the fol-- lowing,critici-lita Cxzqnductc'n'."|031,b switch |26; con-` ductorf |10 5 i ccrnluctoitfV I 05,;v .relay 1.5, conductor |09 and conductor |09', hack-,tofl-thesecondary ofthe transformen |30:- Theemomentarytenergizat-ione.` of Lthex: relay 15 fclosessthe switches. -11,118=

' ondary;omhetransfurmer;|302- Thetmotorf circuits isi' `now.: completed'.- through-3 conductor |f0f9conductor.1509tmotor 115i,v closed switch 18 condi'zctorfl j |03 and:y conductor |031', hack;4 to.- theal secondary;r off' the; transformer.- y 30: The motornow starts I-totoper'ateyand immediately the switcht 131c:1osed,r completingr the carry-- over'- circuit previously:H referred; tot, which f enV sures the operation of the motor until the `vshaft dil-,has made ay completerevollitiom` notwithstandingf thel {factfthat the: switch 181 is opened during, the cycle' The switch 60. iswarranged 13o-open.: momentarily atenone-thirdof; theecycle and its:` opening resultsy in the: deenergization of A the-vrelayilands theopeningiof. switches 11, -18and 19 As has beexnpreviously,.described, ytheenergizaftionc of! the relay.- 15 eiectsV thewithdrawall of thefdetent B5. from therarmv 80 Sthatfthis arml isfreevtobmovenreairwardly'when. the banassembly/42.* movesf` upwardlm thus permitting 'the switch 90 to open. This switch remainsopen during.thecompleterevolution5 of ilieshaftA 49, notwithstanding-...the deenergizationaduring that. revolution of the.vv relaxty 15..- ,Thisw as-fhas; pre-` viouslycbeenfeehlained,-results from thefffact that thesarm. .-884 yisfnot returned. toa .position to close`v lution, wl'xeizeupon.y lthel bar. v assen'ilcrly; Ml'-y moves.t downwardly and :its cams-member 113.-; engages the pin f Mofo the4 arm; 88;.; movingit forwardly again: torrclose the; switch i90 and-to loringtheu shoulder S23-above the detentft v Consequently, .duringl the. complete revolution of the -sh-aft 49x35. aresultf of; theenergization ofthe: relay?. -1 5, the plate circuit of. the pentodeelementsfofthe tube; |3| is openv and noimpulses z aren-sentL outyover. the fpowervv lines. Duri-ng the initial.y palet'.l cit-this complete. revolution: of the.

shaftdja., ther arms 55; andf 6.. make'electrioal connection'; threei timesD between the: ,sector 51- andv the frstf three.contactsA 58.- lC,on sequentl-v, f the electromagnetz-is energized'three times-during the; initialfpart of--thefrevolution ofthe shaftfd; theI circuit beingeasf follows: conductor- [09.5, .con-

ductor |09,.electromagnet or relay 6E, switchY 19,

rst three..l contacts 5th,y arm4v 55, arm..5.5ise` etor 5.1, clmductor:Y |03,- andf. conductor-v, |03!i back, to.

thesecondaryv of; the. ti:ausformer. |30.- It. is=y to'.

hefnoted thatl the.y last three contacts 58;. are.. inoperative-during this.V operationwthel switch 83J being? openia,..res.ult .QL ther4 completion,v of. this circuit=-threef times@ the ratchet-L.. wheel, .62?,

hasebecngmoved :threeteethawayfefrom its initial'.

position, thus `:Lclin'sing-1thefswitchls.

- During; a, subsequentr part.- of; the complete the 'rat'ehtwnersz'ene stedsoftnattagti dielend;

of the complete revolution, the ratchet wheel 62 is removed by two teeth from its normal or in-v operative position, thusproviding the patron with two selections for his dime. Of course the device can be arranged to give a larger number of selections for this or any other particular coin. Thus, instead of connecting three contacts 58 together, a `greater number of contacts may be provided. Thus, for three plays for a dime, the rst series of contacts 58 should include four contacts, and so forth.

The device is now `conditioned for two selections which may be made in the same manner as described above in connection with button No. 7. The net result of the operation of said button No. 7 is the transmission of twelve radio frequency impulses-into the power lines and the movement of the ratchet wheel 62 back one step. The second selection which the patron may make by pressing button No. 12, for example, is that seventeen impulses are sent over the line and the ratchet wheel 62 is moved one step towards its initial position. During the last operation of the motor to which the patron is entitled, the pin 68 opens the switch 59 and further selections are impossible until further coins are inserted in the device. f

The insertion of a quarter, or twenty-ve-cent piece, has the result of closing momentarily the switch |25 which results in the energization of the relay 16 and the closing of the switches 80, 8|, 82 and 83. Switch 80 is a carry-over switch which operates in the same manner as the switch 11. Switch 8l puts the motor in operation in the same manner as described above in connection with switch 18. The switches 82 and 83 have the same function as the switch 19 but they connect both series of contacts 58 to the electromagnet 66. g

Consequently, during the revolution of the shaft A49, resulting from the insertion of a quarter,`the'electromagnet BG'is energized six times and the ratchet wheel 62 is moved six teeth away from its initial position. During this complete revolution, the detent 6| moves the ratchet wheel 62 one tooth back towards initial position, leaving the ratchet wheel displaced ve steps from its initial position as a result of the insertion of a twenty-ve-cent piece. Of course it will be understood that in this case also, any desired number of plays may be given for a quarter. Thus,'if it is desired ,toy give seven plays for a quarter there ought to be eight contacts 58 instead oi.' six, as is shown in the drawings.

At the end of this rst complete revolution, the switch 90 closes, as'has previously vbeen described, and the device is iconditioned for five selections to be made by the patron. yAfter he has made these ve selections, the lmotor switch B9 is opened by the ratchet wheel 62 and the device must be energized by the insertion of a coin or coins before `any further selections may `be ma'de.

No disclosure has been made, hereinv of the phonograph adapted to be controlled by the re-` 1t wm readily be understca with referencete' these applications` that the twelve vradio frequency impulses supplied to the conductors |31 and i313A as a result of the actuation of button 26, have the effect of starting the phonograph and the rendition of the playing of recording No. 7 on the phonograph. Likewise it will readily be under-- stood from the aforesaid copending applications that any other series of impulses, for example twenty impulses, resulting from the actuation of button 26 No. 15, has the effect of'starting the' -phonograph and effecting the rendition of record-i' ing No. l5. Further it will be understood that any number of the buttons 26 may be actuated one after thev other, and that the phonograph starts playing-the recording corresponding to the'v first series of impulses and that the effect of successive series of impulses is to condition the phonograph for the continuous playing of all the corresponding recordings one after the other un-` til all therecordings paid for and selected have been reproduced by the phonograph.

Although the invention has been described ini connection withl speciiic details of a preferred embodiment thereof, it must be understood that' sponding to the selected number of said contacts, individual selector means each arranged to irl-- clude a diierent selected number of said contacts in said circuit, a plurality of credit contacts, means associated with first saidvmovable means and arranged to move over said credit contacts, credit storing means, a second circuit operatively connected to said credit contactsand the second movable means to cause said credit storing means to operate'to an extent depending upon the nume ber of said contacts, coin actuated means for rendering second said circuit operative, and means associated with said credit storing means controlling the effectiveness of said selector means to transmit said impulses.

2. A control unit for automatic phonographs adapted to transmit trains of impulses of various numbers to control selection of corresponding individual recordings, comprising an impulser in.. cluding a motor arranged to transmit a selected number of signal impulses, a second impulser arrangedto be operated by said motor, credit storing means operatively associated with said second impulser whereby said credit storing means is actuated a plurality of times by each operation `of the second impulser, means associated with said credit storing means controlling thel eiectiveness of the rst impulser to transmit signal impulses, and coin actuated means for rendering the second `impulser operative and for rendering the rst impulser inoperative when the second impulser is operating.

3. A control unit for automatic phonographsV adapted to transmit trains of impulses of various numbers to control selection of corresponding iridividual recordings, comprising an impulser in cluding a motor and arranged to transmit a selected number of signal impulses, a second imrevolution of said shaft, yelectromagnetic means. for moving said ratchet means step byY stepin the-opposite direction, a, relay adapted to-be energized by said coin operated switch, a plurality of credit contacts, an ,arm onsaid shaft meansl adapted to engage said ,credit contacts, a switch on said delay adaptedtoconnect saidv credit contacts and last said arm in circuit with said electromagnetic means, and a normally open switch on said relay adapted toinitiate the operation of said motor. l

l0. A control unit for automatic phonographs comprising a plurality of signal contacts, shaft means, a wiper arm carried by said shaft means adapted to engage said contacts, a motor adapted to drive said shaft 'meansthrough a complete revolution, an impulser circuit including said contacts and wiper arm, a plurality of selector means adapted to be manually operable to disconnect a selected number of contacts from said circuit, switch means associated with said selector means adapted to initiate the operation of said motor, a carry-over switch controlled by said motor and adapted to open the circuit thereof when a single revolution of said shaft means is completed, a normally vopen coin controlled switch in circuit with last said switch means, means for receiving a coin, a switch adapted to be operated by said coin, credit ratchet means controlling said coin controlled switch, means operable by said motor for returning said ratchet means a step towards switch opening posi-tion during each revolution of said shaft, electromagnetic means for moving said ratchet means step by step in the opposite direction, a'relay adapted to be energized by said coin operated switch, a plurality of credit contacts, an` arm on said .shaft means adapted to engage said 'credit' contacts, a switch on said relay adapted to connect said credit contacts and last said arm in circuit with said electromagnetic means, a switch on said relay for maintaining said relay energized, a normally closed switch in series with last said switch, means controlled'by the motor for Amomentarily opening said normally Aclosed .switch during the revolution of said shaft means, and a norm-ally open switchon said relay adapted to initiate the operation of said motor.

11.'A'control unit for automatic phonographs comprising aplurality of signal'contacts, shaft i means, a wiper arm carried lby said shaft means adapted to engage said contacts, a motor ladapted to drive said shaft means through a complete revolution, an impulser .circuit including said contacts and wiper arm, a plurality of -selector means adapted to be4 manually operable to disconnect a selected number of contacts from said circuit, switch means associated with said selector means adapted to initiate the operation of said motor, a carryover switchv controlled by said motor and adapted to open the circuitthereof when a single revolution of said shaft means is completed, a normally open coin controlled switch in circuit with last said switch means, means for receiving a coin, a switch adapted to be operated by said coin, credit ratchet means controlling said coin controlled switch, means operable by said motor for returning said ratchet means a step towards switch opening position during each revolution of said shaft, electromagnetic means for moving'said ratchet means step by step in the opposite direction, a relay adapted to be energized by said coin operated switch, a plurality of credit contacts, anl arm on said shaft means adapted to engage saidycredit'contacts, a switch said relay adapted to initiate the operation ofsaid motor, a normally closed switch in first said impulser circuit, latch means normally maintaining said switch closed, means on said relay for mov-- ing said latch means to unlatching position and means actuated by the motor near the end of the complete revolution of said shaft means for closingsaid switch and permitting relatching thereof.

12. A control unit for automatic phcnographs comprising a plurality of signal contacts, shaft means, a wiper arm carried by said shaft means adapted to engage said contacts, a motor adapted to drive said shaft means through a complete revolution, an impulser circuitY including said contacts and 'wiper arm, a lplurality of selector means adapted to be manually operable to disconnect a selected number of contacts from said circuit, switch means associated with said selector means adapted to initiate the operation of said motor, a carry-over switch controlled by said motor and adapted to open the circuit there-` of when a single revolution of said shaft means is completed, a normally open coin controlled switch in circuit with last said switch means, means for receiving a coin, a switch adapted to be operated by said coin, credit ratchet means controlling said coin controlled switch,`means operable by said motor for returning said ratchet means a step towards switch opening position during each revolution of said shaft, electromagnetic means for moving said ratchet means c step by step in the opposite direction, a relay adapted to be energized by said coin operated switch, a plurality of credit contacts, an arm on said shaft means adapted to engage said credit contacts, a switch on said relayfadapted to connect said credit contacts and last said arm in circuit with said electromagnetic means, a switch on said relay for maintaining said relay energized, a normally closed switch in series with last said switch, means controlled by the motor .for momentarily opening said normally closed switch during the revolution of said shaft means, and a'normally open switch on said relay adapted to initiate the operation of said motor, a normally closed switch in first said impulser circuit, latch means normally maintaining said switch closed, means'on said relay for moving said latch means to unlatching position and means actuated by the motor near the end of the complete revolution of said shaft means for closing said switch and peri, mitting relatching thereof.

13. A control unit for automatic phonographs comprising a plurality of signal contacts, shaft means, a wiper arm `carried by said shaft means adapted to engage said contacts, a motor adapted to drive said shaft means through a complete revolution, an impulser circuit including said contacts andwiper arm, a plurality of selector means adapted to be manually operable to disconnect a selected number of contacts from said circuit, switch means associated with said selector means adapted to initiate the operation of said motor, a carry-over switch controlled by said motor and adapted to open the circuit thereof when a single revolution of said shaft means is completed, a normally open coin controlled siga'zsgssa controlledzswitchr. meansfcperables midi-motor fon returning said4 ratchet.` means: a

" Stltwards:switchfopening position during each revolution? of saidfshaft; electromagnetic,v means ton mcvngfsaidf'ratchet meansstepby step inthe opositevdirectiona"pair of relays eachf adapted .tcx'beaenergizedz'by one of. said coin operated switches: al pluralityl of. credit:v contacts; ant arm omsalidislfiatfmeansadapted toiengagessai'dfcredit torcnnect a: .'lifferen't-numberv of' saidz vcred-iti con`- tlca? ands lastgsaidl` arm.: inY circuit with said: elec;- 'omaginetc; means;y and 1 a': normally' open switch ssociate'dr'withf each relay' adaptedr tor'V initiate theaopetationvofsaid:motor. I

14am controlyunit for automaticphonographs comprising 2x1-'plurality' off-'signalI contacts; shaft nieans. arwiper arm= carried? by'saidy shafti means adantedto': engage saidcontacts; a motor` adapted t'drive; saidi shaft-means throughafieomfpleter retaliation;- anv `impulser circuit includinglsaid contacts@ and wiperf arm; asplurality of selector adapted?. to bei manually operable` to,L 'dish ccnnect-aselected number of contacts fromfsaid circuit@A switch' means associated Withl said seleuter' meansv adapted; to initiate the operation o'"said21motor,. a carry-over switch controlledfvfby saicllmotor andi: adapted to open:thecircuittl'iere-k ofLwherral sing'lefxrevolutionv of saidf shaft: means istcompleted,` a; normally open coin: controlled switchi inrcircnit with last said swtchrmeans, means forrec-:eivi'n'g coinsfof tWoI differentiv deai nominations;, ai pair of switches: adaptedf to,kv be operated. indiyiduallyfby' coins of differentV cle--v nominationsf ycredit ratchet means `controlling mean'sroperabletby saiclzmo'torafonfreturning said ratchet., means a step: tclvszardsiswitchv openingi po sti'cnf` during-1eachi revolution `of?! said shaft., electromagnetic means:for@m'oxzingjfsaicl-A ratchet? means stepi-by stepfinthe: opposite directionf, aipair of relays' eachf adapted:` to be energized by; one of said: coi-n3 operated:y switches, a plurality of l credit contacts; any armA on saidf. shaft'` means: adapted; to

engage said: credit contacts; a@ srwitcir; on?` each; of said; relaysfadaptedf. t'off connect ac different num:- berA of `r said-i. credit/s contactar anct last. said?` arm-in circuit with: saidf, electromagnetic: means, and a normallyj open switch; associated with each. relay adaptecl'- tw initiate 1 the operation or ,sa-id:y motor, a: norxrial'lyiA close@l switchrinfirst. sai-df. impulser circuit latchnieans rmrmallyemaintainings said switchwclosedameansf-on saidrelayior moving: said latchf means-to urllatchina positionandilmeansyacztuat'ech byfthemoton nearztheendof: the complete revolutiumv of said; shaft?? means for 'closingf said v 16.15A@ contrer uniti-for"automatic-phonoeraphs comprising@ ai plurality olii4 signalf contacts;z shaft 'means-,c ai wiperrarm: carried by said-f: shaft means adaptedito; engager-said cnntactsta motor. adapted tcdrive'saidshaftmeansethrougli;acomplete revolution, ani' impulsen'fcircuit including; said I con'- tacts and wiper arm, a plurality of selector means adapted: tu? be,`l manually `operable to'r'disconnect a said coin''controlled switch, meansf'operable by sa'iidtf motor' forf returning` sai'df. ratchet' means ,a stepftowards switchopening position` dur/ing,- each revolutionof. saidashait4 electromagnetic; means for moving said ratchet means vstep by step in the opposite direction,-l a pair: of relays eachA adapted tot; be energized byone of', said'f-coin operated switches; a plurality vof credi-t,'contactsfanfarm onzisaidfshaftmeansadapted' to eng-age said-credit contacts; asWitch-'on each of said'rrelays adaptedv tmconnecti a:y different numlcer of; said credit contactsgandlastfsaidf arm in circuit withsaid.- elecf tromagneti-cfmeansg; aswitch on each relay for maintaining said. rela-yA energized; a normal-ly closed switch; in series: With last said. switch, me'ansflcontrolled by the'motorvr for, momentarily opening* last saidf switch during the lrevolution o'-Qsaid shaftfmeans-andfa normally openv switch associate@ with each relay adapted@ to initiate .y :154; A control uni-t for.r automatic phonographs comprising a4 plurality ofsignal*v contacts, shaft adaptedltoaengage said contacts; a motor ladapted tord'riye said shaftmeans: through av complete-rev'- olution, .an-,l impulsercircuit'including-said. veen and: Awiper arm", a plurality of selector means to; befmanually' operable to.` disconnects.-

' selecteer. number f of; contactsl fromfsaid circuit,`

mteltmeans associated with said-v selectormeans adpted to-i'nitiate the? operati'onofV said motor,`

rdamoven' switch: vcontrolled by saictmoton and adaptedi-tol'open-'the` circuit thereof.fwhen aA single revolution of saidshaft means isl completed,l ,a lidmielly vopeny coin1 controlled siwitchrr circuit with lastsaid fswitch@means, means' for receiving coins of;` twordi-fferent denominations;` a pairy of sviit'ehesadaptedf tof be? operated individually.byvr colas' :Staufer-entV denominations,- credit ratchet means! controlling saith coinf.- controlletlH switch;

selected- A'nurnberrv of? contacts fromV saidf 'ci-rcuit, switch means associatedi withzsaim selector-means adapted tot:initiate-y thef-ope'mtiom` ofsaidzwmotcr, ai carrysoverswitchacontrolledi hyy saidvmotor' and adaptedi to; fnzuen-fth'e-v circuiti-tl-'lereoff when 1a. single revolitltionn off.' said? shaft.f=means;-is y completed;f a normallyr open'coirr controlledswitchE in circuit with last-ll saidtswitchi means; meansfonreceiyfing coinsi otftwof different, denominations, a pair l:of switches-,adapted tofbefoperated. individually by co'nse ot fd-itferentf denominations, cred-itratchet means controlling ysaidt, coimv controlledn switch,

meansieperablefhyfsaid-motor: for returning, said ratchetJ'meansf at step towards switch opening, positionr duringfeach'i revolutionsof.. saidishafairelecitromagnetic-fmeans'lformoying sai-d ratchet means stepflcyt step-im the opposite directiorr`a..pair. of relaysr each `aelaptefivto be#energized1 by' onegof saicl, coinoperateclfl switches; awplurality ot credit contaetsfsan. arm` on said shaft means adaptedr9 to engage -saitlcreditf contacts, a= switchV4 on each of saidf relays adaptedpto'f connect a d-iierent. num-y ber of vsait-1 crediti/contacts, and' lastsaidA armivn circuitfwithesaid electromagnetic. means-a switch om each relayzfjtorfmanitammg said, relay 4311er, giz'ed, asnormallytclosediswitchlin serieswitlr last saidfswi-tehif means controlled...by the` motor for momentarily openingslastasaidw switch, duringthe Aif'eyolution rot said shaft meanstand, a normally selected number-of contacts from said circuit, switch means associated with said selector means adapted to initiate .the operation of said motor, a carry-over switch controlled by said motor and adapted to open the circuit thereofwhen a single revolution of said shaft means is completed, a normally open coin controlled switch in circuit with last said switch means, means for receiving coins of two different denominations, a pair of switches adapted to be operated individually by coins of different denominations, credit ratchet means controlling said coin controlled switch, means operable by said motor for returning said ratchet means a step towards switch opening position during each revolution of said shaft means, electromagnetic means for moving said ratchet means step by step in the opposite direction, means connecting one of said coinv operated switches to said electromagnetic means, a relay adapted to be energized by the other coin operated' switch, a plurality of credit contacts, an arm on said shaft means adapted to engage said credit contacts. a switch on said relay to connect a predetermined number of credit contacts and last said arm in circuit with said electromagnetic means, and a normally open switch associated with the relay adapted to initiate the operation of said motor.

18. A control unit for automatic phonographs comprising a plurality of signal contacts, shaft means, a wiper arm carried by said shaft means adapted to engage said contacts7 a motor adapted to drive said shaft means through a complete revolution, an impulser circuit including said contacts and wiper arm, a plurality of selector means adapted to be manually operable to disconnect a selected number of contacts* from said circuit, switch means associated with said selector means adapted to initiate the operation of said motor, a carry-over switch controlled by said motor and adapted to open the circuit thereof when a single revolution of said shaft means is completed. a normally open coin controlled switch in circuit with last said switch means. means for receiving coins of a plurality of dierent denominations, a plurality of switches adapted to be operated individually byV coins of different denominations, credit ratchet means controlling said coin controlled switch, means operable by said motor for returningr said ratchet means a step towards switch opening position during each revolution 'of said shaft means. electromagnetic means for moving said ratchet means sten by step in the opposite ndirection, means connecting one of said `coin operated switches directly to said electromagnetic means. a plurality of relays each adapted to be energized by another of said coin operated switches, a plurality of credit contacts, an arm on said shaft means adapted to engage said credit contacts, a switch on each of said relays adapted to connect a diiferent number of said credit contacts and last said arm in circuit with said electromagnetic means, and a normally open switch associated with each .relay adapted to initiate the operation of said motor.

19. A control unit for automatic phonographs comprising a plurality of signal contacts, shaft means, a wiper arm carried bv said shaft means adapted to engage said contacts. a motor adapted to drive said shaft means through a complete revolution, an impulser circuit including said contacts and wiper arm, a plurality of selector -means adapted to be manually operable to disconnect a selected number of contacts from said circuit, switch means associated with said selector means adapted to initiate the operation of said motor, a carry-over switch controlled by said motor and adapted to open the circuit thereof when a single revolution of said shaft means is completed, a normally open coin controlled switch in circuit with last said switch means, means for receiving coins oi two different denominations, a pair of switches adapted to be operated individually by coins of different denominations, credit ratchet means controlling said coin controlled switch, means operable by said motor for returning said ratchet means a step towards switch opening position during each revolution of said shaft means, electromagnetic means for moving said ratchet means step by step in the opposite direction, means operatively connecting one of said coin operated switches to said electromagnetic means, a relay adapted to be energized by the other of said coin operated switches, a plurality of credit contacts, an arm on said shaft means adapted to engage said credit contacts, a switch on said relay adapted to connect said credit contacts and last said arm in circuit with said electromagnetic means, a switch on said relay for maintaining'said relay energized, a normally closed switch in series with last said switch, means controlled by the motor for momentarily opening last said switch during the revolution of said shaft means, and a normally open switch associated with said relay adapted to initiate the operation of said motor, a normally closed switch in y'first said impulser circuit, latch means normally maintaining said switch closed, means in said relay for moving said latch means to unlatching position, and means actuated by the motor near the end of the complete revolution of said shaftmeans for closing said switch and permitting relatching thereof.

20. A control unit for automatic phonographs comprising a plurality of signal contacts, shaft means, a wiper arm carried by said shaft means adapted to engage said contacts, a motor adapted to drive said shaft means through a complete revolution, an impulser circuit including said contacts and wiper arm, a plurality of selector means adapted to be manually operable to disconnect a selected number of contacts from said circuit, switch means associated with said selector means adapted to initiate the operation of said motor, a carry-over switch controlled by said motor and adapted to open the circuit thereof when a single revolution of said shaft means is completed, a normally open coin controlled switch in circuit with last said switch means, means for receiving coins of a plurality of different denominations, a plurality of switches adapted to be operated individually by coins of different denominations, credit' ratchet means controlling said coin controlled switch, means operable by said motor for returning said ratchet means a step towards switch opening position during each revolution of said shaft means, electromagnetic means for moving said ratchet means step by step in the opposite direction, means connecting one of said coin operated switches to said electromagnetic means,'a plurality of relays each adapted to be energized by one of the other of said coin operated switches, a plurality of credit contacts, an arm on said shaft means adapted to engage said credit contacts, a switch on each of said relays adapted to connect a different-number of said credit contacts and last said arm in ,circuit withv said electromagnetic means, a switch on each relay for maintaining said relay energized, a normally closed switch in series with last said switch, means controlled by the motor for momentarily opening'last said switch during the revolution of said shaft means, and a normally open switch associated with each relay adapted to initiate the operation of said motor, a normally closed switch in first said impulser circuit, latch means normally maintaining said switch closed, means on said relay for moving saidlatch means to runlatching position, and means actuated by the motor near the end of the complete revolution of said shaft means for closing said switch and permitting relatching thereof.

2' 1 In a control unit for automatic phonographs, in combination,` a magazine switch comprising ratchet means, electromagnetic means for moving saidratchet means step by step from switch opening position, and means for moving said ratchet means step by step toward switch opening position, an impulser comprising motor means arranged to transmit a denite number of electrical impulses to said electromagnetic means, a, coin actuated switch for initiating the operation of said motor means, and automatic means for arresting t said motor means after transmission of said iml pulses.

22. In a control unity for ,automatic phonographs, in combination, a magazine switch comprising ratchet means, electromagnetic means for moving' said ratchet means step by step from y, switch opening position, and means for moving `said ratchet means step by step toward switch Aopening position, an impulser comprising motor means arranged to transmit a selected number of` electrical impulses 'to said electromagnetic means, a plurality of coin controlled means for initiating the operation of said motor means and .determining the number of impulses to be transmitted, and automatic means for arresting said lmotor means after the transmission of said impulses. k A

23. In a control unit for automatic phonographs, in combination, a magazine switch comprising ratchet means, electromagnetic means for moving said ratchet means step by 'stepfrom switch opening position, an impulser comprising motor means arranged to transmit a ydefinite number of electrical impulses to 4said electromagnetic means, a coin actuated switch adapted to energize said electromagnetic means, a second coin actuated.

switch for initiating the operation of said motor means, means actuated yby said motor means for moving said ratchet means step by step towards switch opening position, and automatic means for arresting said motor means after the transmission of said-impulses.

24. In a control unit for automatic phonographs, in combination, a magazine switch comprising ratchet means, electromagnetic means for moving said ratchet means .step by step from switch opening position, an impulser comprising motor means arranged to transmit a selected number of electrical impulses to said electromagnetic means, a plurality of coin actuated switches, a plurality of relays associated individually with last said switches, means on said relays for initiating the operation of said motor means and determining the number of impulses to be transmitted, means for moving said ratchet means step by step towards switch opening posimagnetic means, a plurality of coin actuated I switches, means connecting one of last said coin actuated switches to said electromagnetic means associated with the other coin actuated switches, a plurality of relays associated individually with Alast said switches, means on said relays for initiating the operation of said motor means and determining the number of impulses to be transmitted, means for moving said ratchet means step by step towards switch opening position, and automatic means for arresting said motor means.

HERMAN G. JENSEN. MARVIN' G. NELSEN.' 

